Burnt Smells and Hazy Skies Return: What You Need to Know and How to Stay Prepared

2 minutes ago
2 min read

Understanding real time air quality helps guide safer daily decisions during haze periods.

Woman in a beige shirt pinches nose, looking out a window at hazy cityscape. Buildings and smog visible, conveying displeasure.

AI Image: OpenAI

As hazy conditions return to Singapore, many people notice a burnt smell in the air even when official readings appear healthy. This can feel confusing, yet it is linked to how air quality is measured and reported.

The National Environment Agency monitors air quality using the Pollutant Standards Index (PSI). The commonly referenced 24 hour PSI reflects an average over a full day. This means short periods of poorer air quality may not immediately appear in the overall reading.

Air quality map showing PM2.5 levels; Central 21, North 16. Graph indicates a current reading of 16 µg/m³, Band 1 (Normal).

Screenshot: National Environment Agency

For more immediate insight, NEA's 1 hour PM2.5 reading provides a clearer indication of current conditions. It reflects the concentration of fine particulate matter measured over the past hour and is especially useful during haze episodes when PM2.5 is the main pollutant.

This makes it a practical guide for planning outdoor activities such as exercise or short term outings.

Why There Is a Burnt Smell?

Map highlighting Southeast Asia with red markers indicating cities. Countries: Thailand, Vietnam, Malaysia, Indonesia, Philippines. Blue sea.

Screenshot: Meteorological Service SIngapore

According to NEA, the smell is usually linked to transboundary haze caused by forest and peat fires in the region. These fires release both fine particles and a complex mix of gases. Importantly, NEA has clarified that these gases are different from the air pollutants monitored in standard air quality readings.

This explains why a strong burning smell can be present even when PSI or PM2.5 levels do not show a significant increase.

Alternative Air Quality Tools to Check

Singapore air quality map with AQI 60, moderate. Weather forecast: Sat 58, Sun 56, Mon 72. Background map shows various AQI scores.

Screenshot: AQI

For those who want additional reference points, here are three alternative platforms that provide real time air quality updates:

These tools present air quality data in different formats and can complement official updates when making daily plans.

Staying Safe During Hazy Conditions

As air quality levels fluctuate, staying prepared is essential. Here are some practical steps to protect yourself and your loved ones:

Air purifier, inhaler, masks, and phone with 55 air quality displayed on a wooden surface. Text: Haze Readiness. Mood: preparedness.

AI image: OpenAI

Wear an appropriate mask: N95 masks can help filter out fine particulate matter and provide better protection compared to surgical masks.
Use an air purifier: Indoor air quality can be improved with a good air purifier that has a HEPA filter to reduce airborne pollutants.
Keep medications handy: Individuals with respiratory conditions such as asthma should always carry their inhalers in case of sudden breathing difficulties.
Limit strenuous outdoor activities: Reducing prolonged exposure to outdoor air can help minimise respiratory discomfort and other health risks.
Checking 1 hour PM2.5 readings before heading outdoors can support safer decisions for immediate plans.

As haze conditions may persist depending on regional weather patterns, staying informed through official updates and taking necessary precautions will ensure better health and well-being.